Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li

Autores
Dong, G.X.; Michel, N.; Fossez, K.; Ploszajczak, M.; Jaganathen, Y.; Id Betan, Rodolfo Mohamed
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background. According to standard stellar evolution, lithium abundance is believed to be a useful indicator of the stellar age. However, many evolved stars like red giants show huge fluctuations around expected theoretical abundances that are not yet fully understood. The better knowledge of nuclear reactions that contribute to the creation and destruction of lithium can help to solve this puzzle. Purpose. In this work we apply the Gamow shell model formulated in the coupled-channel representation to investigate the mirror radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li. Method. The cross-sections are calculated using a translationally invariant Hamiltonian with the finite-range interaction which is adjusted to reproduce spectra, binding energies and one-nucleon separation energies in 6-7Li, 7Be. The reaction channels are built by coupling the wave functions of ground state and excited states ,31+,01+,21+ of 6Li with the projectile wave function in different partial waves. Results. We include all relevant E1, M1, and E2 transitions from the initial continuum states to the final bound states and of 7Li and 7Be. Our microscopic astrophysical factor for the 6Li(p, γ)7Be reaction follows the average trend of the experimental value as a function of the center of mass energy. For6(n,γ)Li, the calculated cross section agrees well with the data from the direct measurement of this reaction at stellar energies. Conclusion. We demonstrate that the s-wave radiative capture of proton (neutron) to the first excited state Jπ = 1+ of 7Be (7Li) is crucial and increases the total astrophysical S-factor by about 40%.
Fil: Dong, G.X.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Michel, N.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Fossez, K.. Michigan State University; Estados Unidos
Fil: Ploszajczak, M.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Jaganathen, Y.. Michigan State University; Estados Unidos
Fil: Id Betan, Rodolfo Mohamed. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Materia
LITHIUM ABUNDANCE
RADIATIVE CAPTURE
SCATTERING THEORY
STELLAR HYDROGEN BURNING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/50470
Acceder
id CONICETDig_351eba7a4bc40a6ffa5f4d316ca540fc
oai_identifier_str oai:ri.conicet.gov.ar:11336/50470
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7LiDong, G.X.Michel, N.Fossez, K.Ploszajczak, M.Jaganathen, Y.Id Betan, Rodolfo MohamedLITHIUM ABUNDANCERADIATIVE CAPTURESCATTERING THEORYSTELLAR HYDROGEN BURNINGhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Background. According to standard stellar evolution, lithium abundance is believed to be a useful indicator of the stellar age. However, many evolved stars like red giants show huge fluctuations around expected theoretical abundances that are not yet fully understood. The better knowledge of nuclear reactions that contribute to the creation and destruction of lithium can help to solve this puzzle. Purpose. In this work we apply the Gamow shell model formulated in the coupled-channel representation to investigate the mirror radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li. Method. The cross-sections are calculated using a translationally invariant Hamiltonian with the finite-range interaction which is adjusted to reproduce spectra, binding energies and one-nucleon separation energies in 6-7Li, 7Be. The reaction channels are built by coupling the wave functions of ground state and excited states ,31+,01+,21+ of 6Li with the projectile wave function in different partial waves. Results. We include all relevant E1, M1, and E2 transitions from the initial continuum states to the final bound states and of 7Li and 7Be. Our microscopic astrophysical factor for the 6Li(p, γ)7Be reaction follows the average trend of the experimental value as a function of the center of mass energy. For6(n,γ)Li, the calculated cross section agrees well with the data from the direct measurement of this reaction at stellar energies. Conclusion. We demonstrate that the s-wave radiative capture of proton (neutron) to the first excited state Jπ = 1+ of 7Be (7Li) is crucial and increases the total astrophysical S-factor by about 40%.Fil: Dong, G.X.. Grand Accélérateur National d’Ions Lourds; FranciaFil: Michel, N.. Grand Accélérateur National d’Ions Lourds; FranciaFil: Fossez, K.. Michigan State University; Estados UnidosFil: Ploszajczak, M.. Grand Accélérateur National d’Ions Lourds; FranciaFil: Jaganathen, Y.. Michigan State University; Estados UnidosFil: Id Betan, Rodolfo Mohamed. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaIOP Publishing2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50470Dong, G.X.; Michel, N.; Fossez, K.; Ploszajczak, M.; Jaganathen, Y.; et al.; Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-120954-3899CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa5f24info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa5f24/metainfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1601.06660info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T10:24:54Zoai:ri.conicet.gov.ar:11336/50470instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-26 10:24:54.828CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
title Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
spellingShingle Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
Dong, G.X.
LITHIUM ABUNDANCE
RADIATIVE CAPTURE
SCATTERING THEORY
STELLAR HYDROGEN BURNING
title_short Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
title_full Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
title_fullStr Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
title_full_unstemmed Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
title_sort Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li
dc.creator.none.fl_str_mv Dong, G.X.
Michel, N.
Fossez, K.
Ploszajczak, M.
Jaganathen, Y.
Id Betan, Rodolfo Mohamed
author Dong, G.X.
author_facet Dong, G.X.
Michel, N.
Fossez, K.
Ploszajczak, M.
Jaganathen, Y.
Id Betan, Rodolfo Mohamed
author_role author
author2 Michel, N.
Fossez, K.
Ploszajczak, M.
Jaganathen, Y.
Id Betan, Rodolfo Mohamed
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv LITHIUM ABUNDANCE
RADIATIVE CAPTURE
SCATTERING THEORY
STELLAR HYDROGEN BURNING
topic LITHIUM ABUNDANCE
RADIATIVE CAPTURE
SCATTERING THEORY
STELLAR HYDROGEN BURNING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Background. According to standard stellar evolution, lithium abundance is believed to be a useful indicator of the stellar age. However, many evolved stars like red giants show huge fluctuations around expected theoretical abundances that are not yet fully understood. The better knowledge of nuclear reactions that contribute to the creation and destruction of lithium can help to solve this puzzle. Purpose. In this work we apply the Gamow shell model formulated in the coupled-channel representation to investigate the mirror radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li. Method. The cross-sections are calculated using a translationally invariant Hamiltonian with the finite-range interaction which is adjusted to reproduce spectra, binding energies and one-nucleon separation energies in 6-7Li, 7Be. The reaction channels are built by coupling the wave functions of ground state and excited states ,31+,01+,21+ of 6Li with the projectile wave function in different partial waves. Results. We include all relevant E1, M1, and E2 transitions from the initial continuum states to the final bound states and of 7Li and 7Be. Our microscopic astrophysical factor for the 6Li(p, γ)7Be reaction follows the average trend of the experimental value as a function of the center of mass energy. For6(n,γ)Li, the calculated cross section agrees well with the data from the direct measurement of this reaction at stellar energies. Conclusion. We demonstrate that the s-wave radiative capture of proton (neutron) to the first excited state Jπ = 1+ of 7Be (7Li) is crucial and increases the total astrophysical S-factor by about 40%.
Fil: Dong, G.X.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Michel, N.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Fossez, K.. Michigan State University; Estados Unidos
Fil: Ploszajczak, M.. Grand Accélérateur National d’Ions Lourds; Francia
Fil: Jaganathen, Y.. Michigan State University; Estados Unidos
Fil: Id Betan, Rodolfo Mohamed. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
description Background. According to standard stellar evolution, lithium abundance is believed to be a useful indicator of the stellar age. However, many evolved stars like red giants show huge fluctuations around expected theoretical abundances that are not yet fully understood. The better knowledge of nuclear reactions that contribute to the creation and destruction of lithium can help to solve this puzzle. Purpose. In this work we apply the Gamow shell model formulated in the coupled-channel representation to investigate the mirror radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li. Method. The cross-sections are calculated using a translationally invariant Hamiltonian with the finite-range interaction which is adjusted to reproduce spectra, binding energies and one-nucleon separation energies in 6-7Li, 7Be. The reaction channels are built by coupling the wave functions of ground state and excited states ,31+,01+,21+ of 6Li with the projectile wave function in different partial waves. Results. We include all relevant E1, M1, and E2 transitions from the initial continuum states to the final bound states and of 7Li and 7Be. Our microscopic astrophysical factor for the 6Li(p, γ)7Be reaction follows the average trend of the experimental value as a function of the center of mass energy. For6(n,γ)Li, the calculated cross section agrees well with the data from the direct measurement of this reaction at stellar energies. Conclusion. We demonstrate that the s-wave radiative capture of proton (neutron) to the first excited state Jπ = 1+ of 7Be (7Li) is crucial and increases the total astrophysical S-factor by about 40%.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/50470
Dong, G.X.; Michel, N.; Fossez, K.; Ploszajczak, M.; Jaganathen, Y.; et al.; Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-12
0954-3899
CONICET Digital
CONICET
url http://hdl.handle.net/11336/50470
identifier_str_mv Dong, G.X.; Michel, N.; Fossez, K.; Ploszajczak, M.; Jaganathen, Y.; et al.; Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-12
0954-3899
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa5f24
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa5f24/meta
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1601.06660
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.176822

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